Seattle to Detroit (SEA-DTW): nonstop upgrade & award space

Delta Air Lines and Alaska Airlines fly nonstop between Seattle (SEA) and Detroit (DTW), roughly 48 times a week. With Delta Air Lines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. 2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines, on every SEA to DTW departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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48
Nonstop flights a week
1,922 mi
Nonstop distance
Free
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Seattle to Detroit flight schedule

Scheduled nonstop departures for SEA to DTW, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Seattle (SEA) to Detroit (DTW)
Date Flight Airline Departs SEA Arrives DTW Duration Aircraft
DL 812Delta Air Lines06:0013:204h 20m739
AS 313Alaska Airlines, Inc.09:1316:404h 27m7M8
DL 2324Delta Air Lines09:4317:104h 27m739
DL 1706Delta Air Lines11:4519:154h 30m32Q
DL 533Delta Air Lines15:0022:174h 17m739
AS 343Alaska Airlines, Inc.21:5905:224h 23m73H
DL 810Delta Air Lines23:0506:284h 23m32Q
DL 812Delta Air Lines06:0013:204h 20m739
AS 313Alaska Airlines, Inc.09:1316:404h 27m7M8
DL 2324Delta Air Lines09:4317:104h 27m739
DL 1706Delta Air Lines11:4519:154h 30m32Q
DL 533Delta Air Lines15:0022:174h 17m739
AS 343Alaska Airlines, Inc.21:5905:224h 23m73J
DL 810Delta Air Lines23:0506:284h 23m32Q
DL 812Delta Air Lines06:0013:204h 20m739
AS 313Alaska Airlines, Inc.09:1316:404h 27m7M8
DL 2324Delta Air Lines09:4317:104h 27m739
DL 1706Delta Air Lines11:4519:154h 30m32Q
DL 533Delta Air Lines15:0022:174h 17m739
AS 343Alaska Airlines, Inc.21:5905:224h 23m73J
DL 810Delta Air Lines23:0506:284h 23m32Q
DL 812Delta Air Lines06:0013:204h 20m739
AS 313Alaska Airlines, Inc.09:1316:404h 27m7M8
DL 2324Delta Air Lines09:4317:104h 27m739
DL 1706Delta Air Lines11:4519:154h 30m32Q
DL 533Delta Air Lines15:0022:174h 17m739
AS 343Alaska Airlines, Inc.21:5905:224h 23m7M9
DL 810Delta Air Lines23:0506:284h 23m32Q
DL 812Delta Air Lines06:0013:204h 20m739
AS 313Alaska Airlines, Inc.09:1316:404h 27m7M9
DL 2324Delta Air Lines09:4317:10—739
DL 1706Delta Air Lines11:4519:154h 30m32Q
DL 533Delta Air Lines15:0022:174h 17m739
AS 343Alaska Airlines, Inc.21:5905:224h 23m7M9
DL 810Delta Air Lines23:0506:284h 23m32Q
DL 812Delta Air Lines06:0013:204h 20m739
AS 313Alaska Airlines, Inc.09:1316:404h 27m7M8
DL 2324Delta Air Lines09:4317:104h 27m739
DL 1706Delta Air Lines11:4519:154h 30m32Q
DL 533Delta Air Lines15:0022:174h 17m739

Showing the first 40 of 49 scheduled SEA to DTW departures across the next 7 days with service. Every remaining date is on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every SEA to DTW date on the interactive map

Confirmed upgrade & award space on SEA to DTW departures

2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines, segment by segment and date by date. Open the calendar for Seattle to Detroit to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each SEA to DTW departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SEA to DTW on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Seattle to Detroit nonstop

Carriers operating SEA to DTW nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See SEA to DTW on the interactive map →

Frequently asked questions about SEA to DTW

How far is Detroit from Seattle?
SEA to DTW covers about 1,922 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from SEA to DTW?
Delta Air Lines and Alaska Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines.
How many flights a week are there from SEA to DTW?
About 48 nonstop flights a week run between Seattle and Detroit in the current schedule, operated by Delta Air Lines and Alaska Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from SEA to DTW depart?
Scheduled SEA to DTW nonstops in the next 7 days with service leave between 06:00 and 23:05, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on SEA to DTW?
Open the SEA to DTW route on the interactive map or the matrix to see confirmed upgrade and award space by date on Delta Air Lines and Alaska Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss SEA to DTW upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

Get started free